spoolinup Posted May 17, 2012 Report Share Posted May 17, 2012 rebuilt the motor had it re machined and the cylinders honed the block cleaned used a set of good stock pistons. brand new rings, all bearings and the head was all rebuilt by a local good machine shop. the motor ran and everything timing is dead nuts on. was reading no oil pressure on the gauge but oil was coming out of the lifters when i first started with the valve cover off to make sure there was good oil flow. the pick up could have plugged and the oil not got to the rings and seated. well now the motor cranks and has low comp in all 4 cylinders about 40-50psi. but the motor did run before could the rings just not be seated good enough to have the motor run. i rebuilt a old oil pump to fix the problem which i thought it was. haven't put in the car yet just got it towed home from work. any ideas tips or things to check. thanks appreciate it. has fuel and spark. email, pm call or txt me i need help asap. 3607914859 zack Link to comment Share on other sites More sharing options...
kinree Posted May 17, 2012 Report Share Posted May 17, 2012 i blame the tan interior Link to comment Share on other sites More sharing options...
The Rabbit1 Posted May 17, 2012 Report Share Posted May 17, 2012 timing is off, check valve timing. did you bleed your hydraulic lifters? Link to comment Share on other sites More sharing options...
scott87star Posted May 17, 2012 Report Share Posted May 17, 2012 Unless you have reason to believe the pickup is plugged its not very likely, but you do need to verify you have oil pressure before you try to run it again. Get it ready, pull the plugs out and remove the negative coil wire so the ECU won't try to fire the injectors (white wire and blue with a white stripe). Put a tablespoon of oil in each cylinder, get a real gauge on the oil supply and do a compression check on each hole. You need over 100 to get it to run, but with all that cranking you should be seeing oil pressure on the gauge. Link to comment Share on other sites More sharing options...
spoolinup Posted May 18, 2012 Author Report Share Posted May 18, 2012 how do you bleed the lifters?? okay will do then repost thanks Link to comment Share on other sites More sharing options...
Caliber308 Posted May 19, 2012 Report Share Posted May 19, 2012 (edited) Have you ever started or broke in a new engine rebuild before? Did you prime the Oil Pump and lifters? Disconnect the coil wire and Injector clips prior to trying to start the car. Turn it over in short bursts until you see the oil pressure start to rise on the gauge. Then, re-connect the coil and injector clips. After it starts HOLD the RPMS at 1500 for appox. 10 minutes. Then, take it out for a hard drive for 10 minutes (NO BOOSTING). Then, park it and let it cool completely down. No boosting for the first 500 miles. Change the oil and oil filter at 100,500 and 1000 miles. After that, you are good to go. Bill Edited May 19, 2012 by Caliber308 Link to comment Share on other sites More sharing options...
Skullzaflare Posted May 21, 2012 Report Share Posted May 21, 2012 sounds like your machine shop might not have even put the oil squirters back inout some oil in each cylinder and test compression again, if it goes up, you have no oil on your cylinder walls (rings installed wrong possibly)if it doesnt change, its either the lifters need bled, or the cam to crank timing is off Link to comment Share on other sites More sharing options...
Caliber308 Posted May 23, 2012 Report Share Posted May 23, 2012 (edited) well now the motor cranks and has low comp in all 4 cylinders about 40-50psi. but the motor did run before could the rings just not be seated good enough to have the motor run. Yes. You will not show Oil Pressure at first on a new rebuild, but within 5 to 10 seconds of cranking it over you should. How long did you crank on it to get a 40 to 50 psi reading on compression and what was the Oil Pressure Gauge reading? PS. You don't want it to run prior to establishing Oil Pressure, PERIOD!! Bill Edited May 23, 2012 by Caliber308 Link to comment Share on other sites More sharing options...
Caliber308 Posted May 23, 2012 Report Share Posted May 23, 2012 sounds like your machine shop might not have even put the oil squirters back inout some oil in each cylinder and test compression again, if it goes up, you have no oil on your cylinder walls (rings installed wrong possibly)if it doesnt change, its either the lifters need bled, or the cam to crank timing is off Skullzaflare, Oil Squirters are for cooling the pistons on a Turbocharged engine that is at operating temperature, not a issue at initial start up. Bill Link to comment Share on other sites More sharing options...
Skullzaflare Posted May 23, 2012 Report Share Posted May 23, 2012 Skullzaflare, Oil Squirters are for cooling the pistons on a Turbocharged engine that is at operating temperature, not a issue at initial start up. Billoh? so, what happens if you leave them out of the block? you have 4 open free flowing channels where all the oil will just spray back straight at the oil pan, with only restriction being the size of the hole (since what enables the squirters is a ball and spring INSIDE the nozzle Link to comment Share on other sites More sharing options...
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